<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="vue.js"></script>
    <link rel="stylesheet" href="./node_modules/animate.css/animate.css">
</head>
<body>
<div id="app">
    <transition
            enter-active-class="animated swing slow"
            leave-active-class="animated swing fast">
        <div v-if="show">hello</div>
    </transition>
    <button @click="handelClick">show</button>
</div>
</body>
<script>
    var app = new Vue({
        el:'#app',
        data:{
            show:true
        },
        methods:{
            handelClick:function () {
                this.show = !this.show
            }
        }
    })
</script>
</html>
